Carpenter&#39;s marking device.



J. E. AHLVIN.

' GARPBNTBR'S MARKING DEVICE.

APPLICATION FILED JUNE 14,1913.

Patanted June 30, 19M

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CARPENTERS MARKING DEVICE.

To all whom it may concern Be it known that I, JOHN E. AHLVIN, a citizen of the United States, residing at Joliet, in the county of TWill and State of Illinois, have invented a new and useful mprovement in Carpenters Marking Devices, of which the following is a specification.

This invention relates particularly to means for marking door-jambs and doors to facilitate the attachment of hinges; and the primary object of the invention is to provide a simple and inexpensive marking-device which will enable the hinges to be located with facility and accuracy.

The invention is illustrated in the accompanying drawing, in which- Figure 1 represents a sectional view of a door-jamb or easement; Fig. 2, a front elevational view of the improved marking-implement; Fig. 3, an edge view of the door; Fig. 4, a perspective View of a stop or abutment employed; Fig. 5, a perspective view of an adjustable marker employed; Fig. 6, a perspective view of a companion marker; and Fig. 7, a section on an enlarged scale taken as indicated at line 7 of Fig. 2.

In the drawing, A represents a door-j amb or easement; B, a door; and C, my improved marking-device adapted to serve in marking the hinge-locations for the door and door-jamb.

The marking-device C comprises a rod or bar 1, a stop or abutment 2 applied to the upper end thereof; and pairs of adjustablymounted markers or blades 3 and 4. The bar or mounting 1 may be of hard wood, if desired. lt preferably has one beveled edge, as indicated at 1a. rlhe abutment 2 preferably comprises a stamping comprising a vertical wall 2a, a vertical wall or edgeflange 2b which is oblique to the wall 2a, a vertical wall or edge-flange 2C which is perpendicular to the wall 2a, and a flange 2d which is turned outwardly at right angles to the upper edge of the wall 2a. rlhe edgeflange 2b corresponds with the beveled edge 1a of the rod, and a set-screw 5, extending through the flange 2c, serves as a means for clamping the member 2 in position. The member 3 comprises the vertical wall 3a, the oblique vertical wall or edge-flange 3b, the edge-fiange 3c, and the horizontal chiseledge 3d, which is preferably formed by striking the metal of the wall 3a outwardly and Specification of Letters Patent.

Application filed June 14, 1913.

Patented J une 30, 1914.

Serial No. 773,770.

sharpening it, with the bevel down. The member 4 comprises the vertical wall 4a, the oblique vertical edge-flange 4b, the edgeiiange 4, and the horizontal chisel-edge 4d. In this case, the bevel of the chisel-edge is up. Set-screws 5 are employed in connection with the members 8 and 4.

In the illustration given, three pairs of markers are shown, corresponding with three hinges of a door.

rlhe rod or bar 1 is of suitable length to lit within the door-opening at 6, adjacent the stop 7, the upper surface of the flange 2d bearing against the upper member of the door jamb. rl`he members 3 and 4 of each pair of markers are adjusted to correspond with the length of the hinge; and assuming the implement to be entered in the dooropening and disposed adjacent the stop 7, with the chisel-edges against the vertical member of the door-jamb, the marking may be effected by tapping upon the opposite side of the bar l in the vicinity of the markers. The door may be correspondingly marked, by engaging the flange 2d over the upper edge of the door, so that the chisel edges will bear against the rear edge of the door by tapping the bar at the locations where the markers are, so that the exact locations of the hinges may be indicated on the door. The marks on the door-jamb are indicated at 8; and the marks on the door are indicated at 9. The thickness of t-he flange 2d will give a desirable clearance at the upper edge of the door. It will be understood, of course, that the chisel-edges are square to the rod or bar 1, so that the marks made on the door and door-j amb will afford an accurate guide for the chisel in the hands of the carpenter when these parts are to be mortised to receive the hinges.

By employing for the abutment 2d, and the chisel-edges 3d and 4d which are open at one side, and set-screws for clamping the members in place, any desired adjustment may be readily eected. Moreover, the members may be readily removed from one bar and applied to another to correspond with a door of any height. Again the bar carrying the adjustably-secured members may be replaced as often as will be necessary.

rThe foregoing detailed description has been given for clearness of understanding, and no unnecessary limitation should be understood therefrom, but the appended claims should be construed as broadly as coperating with said side walls to secure permissible in view of the prior art. the Amarking member to the bar.

What I regard as new and desire to Vsecure 2. As .an article .of manufacture a Inarkby Letters Patent is ing device comprising a front wall having 20 5 1. n a marking device of the rcharacter a portion thereof struck outwardly, Said latset forth, the combination with a bar having ter portion being sharpened to form a marlia beveled edge, of adjustablymounted mark-l ing blade, and rearwardly extending side ing lmembers adapted to slidably embrace walls one of which is inclined inwardly tosaid bar, each of said members comprising ward the opposing wall, and clamping 25 10 a front wall having a portion thereofv means cooperating with said side walls to struck outwardly, said latter Yportion Ibeing secure said marking member in adjusted. sharpened to Iform a marking bladej and marking po-sition.

rearwardly extending side walls one of JGHN E. AHLVN. which is inclined 'inwardly ltoward the ,op- In lthe presence of- 15 posing walland adapted Ato contact with the Nieman iB. DEARBORN,

beveled edgeof the bar, and clamping means 0. "C. Avisos.

Gqpes lof this Patent may 4be obtaine'dlfor jive cents each, `by addressing the Commissioner of Patents, Washiugtomj). C. 

